The W/L ratios of the two differential transistors in a nmos differential amplifier are mismatched by 2%, and a CMRR>80dB is required. If _m=0.18m _=100 _=0.2 _^′=5 /m And if the tail current ideal source is replaced by a nmos transistor, find the necessary L for the bias current source transistor. What is the transconductance percent mismatch?

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